1	Annotea and Semantic Web Supported Collaboration Marja-Riitta Koivunen Annotea project
2	Annotea Started 1988 as a user-centered idea to better support W3C WG review and collaboration Applied Semantic Web technologies to implementation a eat your own dog food
3	Review of W3C WG Standards: focus on locations, lists, issues
4	Review with Annotea annotations: focus on issues, collaborative groups
5	Issues are stored in annotation objects To user annotation objects resemble post-it notes attached to a location in a document They have content, type, dates, author, etc. that can be queried and used in filtering Annotation objects are Web resources with URIs
6	Semantic Web support Annotation objects are easy to support with Semantic Web technologies Easy to add new properties and query both known and unknown properties of an object
7	Semantic Web support Easy to extend location properties: video annotations (FilmEd), audio annotations, image annotations with svg path location Existing applications’ do not always understand how to present new additions default presentations for any properties are not best from user viewpoints an extension mechanism with user interface language could define how and in which order to present properties in certain views
8	Semantic Web support Easy to merge Annotation objects from several sources
9	Semantic Web support Easy to customize data (annotation types and icons) Easy to filter data according to property values
10	Semantic Web support It is fast to create new views to the data and combine data from different sources e.g. Annotea data with FOAF data
11	Semantic Web support Use of standard SW metadata in Annotea supports many kinds of applications and user interfaces: browsers with annotation ui (Amaya, Annozilla …) irc Chump with commands to create annotations spam annotations with Web form (W3C) annotations of ontologies (SWOOP) annotations with ontologies (SemTag with TAP ontologies) etc.
12	SW support for continuous user requests? Annotation objects were the beginning New extensions supporting user requests show the real power of SWSC
13	User request: “I want to reply to an annotation” Replies are post-it notes that form discussion threads in document context
14	Semantic Web support Easy to add a new Annotea object: Annotea reply Easy to generate reply threads Most work needed to program the user interface and think policies for deleting objects in the middle of the thread
15	User request: “I want to group/tag objects under topics” Topics support user’s view of the world Bookmarks annotate documents with one or more topics Topics form topic hierarchies Topics can link to concepts in more standard ontologies
16	Topics can help users to discover new information
17	Semantic Web support Easy to add new Annotea objects: Annotea bookmark and topic Most work needed to program the user interface
18	User Request: “I want to give status to documents” topics can state status
19	Semantic Web support Shared bookmarks and topics can be used in many ways: Social bookmarks (like del.icio.us) Status info Use bookmark files as user profiles Find new unexpected relations via topics Combine user topics with automatic categories e.g. in Magpie Etc.
20	Semantic Web support Use bookmarks to order search engine results
21	User request: “I want to store annotations in documents” Annotation servers have many benefits but users don’t always have access to one right away Users need to store a snapshot of annotations with a version of a document Can we store annotations and bookmarks also in local or published documents on the Web?
22	Semantic Web support <?xml version="1.0"?> <RDF:RDF xmlns:NS2="http://www.w3.org/2002/01/bookmark#" xmlns:NS1="http://www.w3.org/2000/10/annotation-ns#" xmlns:OWL="http://www.w3.org/2002/07/owl#" xmlns:ns0="http://purl.org/dc/elements/1.1/" xmlns:NC="http://home.netscape.com/NC-rdf#" xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> <NS2:Topic RDF:about="urn:uid:824b59aa-c01b-42fa-ae14-3b9929001a58" NS1:created="2003-12-15T02:12:18-05:00" ns0:title="Treatment" ns0:description="Molecules and medicines to treat CML" ns0:creator="marja" ns0:date="2003-12-15T02:12:18-05:00"> <NS2:subTopicOf RDF:resource="urn:uid:5663b80a-ea30-4392-8de4-fab812bd43da"/> </NS2:Topic> <NS2:Bookmark RDF:about="urn:uid:20fc01eb-f4bd-4706-b8ab-636fe77d8fa6" NS1:created="2003-12-30T22:09:34-05:00" ns0:date="2003-12-30T22:09:34-05:00" ns0:creator="marja" ns0:description="CGAP Genes tools for finding genes" ns0:title="CGAP: Genes"> <NS2:recalls RDF:resource="http://cgap.nci.nih.gov/Genes"/> <NS2:hasTopic RDF:resource="urn:uid:db778fdc-dcd1-451d-b3ce-03445b987e41"/> </NS2:Bookmark>
23	Semantic Web support
24	Semantic Web support Server generates http URIs as IDs for Annotea objects http URIs are problematic in bookmark files as Not every user has a domain name available Relative URI’s are problematic in merging or moving bookmark files UUID URIs are problematic as User cannot retrieve the metadata just based on URI (needs a resolver) In practice UUIDs work fine as Annotea objects metadata is searched from given files or servers
25	Annotations vs. bookmarks?
26	Summary SW is a technology, still it supports collaboration in many ways SW helps to share data with other users and easily merge Annotea objects Annotea objects help to keep relevant data together both in users’ minds and technically SW queries help to create views to data quickly and according to user needs SW helps to extend and customize Annotea objects and make links to other metadata Many applications can benefit from Annotea objects User interface definition language for SW with presentation rules would help user–centered development even more
27	Additional information marja@annotea.org http://www.annotea.org/mozilla/ubi.html http://www.w3.org/2001/Annotea